1 /* 2 * Copyright (C) 2005 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // 18 // Definitions of resource data structures. 19 // 20 #ifndef _LIBS_UTILS_RESOURCE_TYPES_H 21 #define _LIBS_UTILS_RESOURCE_TYPES_H 22 23 #include <androidfw/Asset.h> 24 #include <utils/ByteOrder.h> 25 #include <utils/Errors.h> 26 #include <utils/String16.h> 27 #include <utils/Vector.h> 28 29 #include <utils/threads.h> 30 31 #include <stdint.h> 32 #include <sys/types.h> 33 34 #include <android/configuration.h> 35 36 namespace android { 37 38 /** ******************************************************************** 39 * PNG Extensions 40 * 41 * New private chunks that may be placed in PNG images. 42 * 43 *********************************************************************** */ 44 45 /** 46 * This chunk specifies how to split an image into segments for 47 * scaling. 48 * 49 * There are J horizontal and K vertical segments. These segments divide 50 * the image into J*K regions as follows (where J=4 and K=3): 51 * 52 * F0 S0 F1 S1 53 * +-----+----+------+-------+ 54 * S2| 0 | 1 | 2 | 3 | 55 * +-----+----+------+-------+ 56 * | | | | | 57 * | | | | | 58 * F2| 4 | 5 | 6 | 7 | 59 * | | | | | 60 * | | | | | 61 * +-----+----+------+-------+ 62 * S3| 8 | 9 | 10 | 11 | 63 * +-----+----+------+-------+ 64 * 65 * Each horizontal and vertical segment is considered to by either 66 * stretchable (marked by the Sx labels) or fixed (marked by the Fy 67 * labels), in the horizontal or vertical axis, respectively. In the 68 * above example, the first is horizontal segment (F0) is fixed, the 69 * next is stretchable and then they continue to alternate. Note that 70 * the segment list for each axis can begin or end with a stretchable 71 * or fixed segment. 72 * 73 * The relative sizes of the stretchy segments indicates the relative 74 * amount of stretchiness of the regions bordered by the segments. For 75 * example, regions 3, 7 and 11 above will take up more horizontal space 76 * than regions 1, 5 and 9 since the horizontal segment associated with 77 * the first set of regions is larger than the other set of regions. The 78 * ratios of the amount of horizontal (or vertical) space taken by any 79 * two stretchable slices is exactly the ratio of their corresponding 80 * segment lengths. 81 * 82 * xDivs and yDivs point to arrays of horizontal and vertical pixel 83 * indices. The first pair of Divs (in either array) indicate the 84 * starting and ending points of the first stretchable segment in that 85 * axis. The next pair specifies the next stretchable segment, etc. So 86 * in the above example xDiv[0] and xDiv[1] specify the horizontal 87 * coordinates for the regions labeled 1, 5 and 9. xDiv[2] and 88 * xDiv[3] specify the coordinates for regions 3, 7 and 11. Note that 89 * the leftmost slices always start at x=0 and the rightmost slices 90 * always end at the end of the image. So, for example, the regions 0, 91 * 4 and 8 (which are fixed along the X axis) start at x value 0 and 92 * go to xDiv[0] and slices 2, 6 and 10 start at xDiv[1] and end at 93 * xDiv[2]. 94 * 95 * The array pointed to by the colors field lists contains hints for 96 * each of the regions. They are ordered according left-to-right and 97 * top-to-bottom as indicated above. For each segment that is a solid 98 * color the array entry will contain that color value; otherwise it 99 * will contain NO_COLOR. Segments that are completely transparent 100 * will always have the value TRANSPARENT_COLOR. 101 * 102 * The PNG chunk type is "npTc". 103 */ 104 struct Res_png_9patch 105 { 106 Res_png_9patch() : wasDeserialized(false), xDivs(NULL), 107 yDivs(NULL), colors(NULL) { } 108 109 int8_t wasDeserialized; 110 int8_t numXDivs; 111 int8_t numYDivs; 112 int8_t numColors; 113 114 // These tell where the next section of a patch starts. 115 // For example, the first patch includes the pixels from 116 // 0 to xDivs[0]-1 and the second patch includes the pixels 117 // from xDivs[0] to xDivs[1]-1. 118 // Note: allocation/free of these pointers is left to the caller. 119 int32_t* xDivs; 120 int32_t* yDivs; 121 122 int32_t paddingLeft, paddingRight; 123 int32_t paddingTop, paddingBottom; 124 125 enum { 126 // The 9 patch segment is not a solid color. 127 NO_COLOR = 0x00000001, 128 129 // The 9 patch segment is completely transparent. 130 TRANSPARENT_COLOR = 0x00000000 131 }; 132 // Note: allocation/free of this pointer is left to the caller. 133 uint32_t* colors; 134 135 // Convert data from device representation to PNG file representation. 136 void deviceToFile(); 137 // Convert data from PNG file representation to device representation. 138 void fileToDevice(); 139 // Serialize/Marshall the patch data into a newly malloc-ed block 140 void* serialize(); 141 // Serialize/Marshall the patch data 142 void serialize(void* outData); 143 // Deserialize/Unmarshall the patch data 144 static Res_png_9patch* deserialize(const void* data); 145 // Compute the size of the serialized data structure 146 size_t serializedSize(); 147 }; 148 149 /** ******************************************************************** 150 * Base Types 151 * 152 * These are standard types that are shared between multiple specific 153 * resource types. 154 * 155 *********************************************************************** */ 156 157 /** 158 * Header that appears at the front of every data chunk in a resource. 159 */ 160 struct ResChunk_header 161 { 162 // Type identifier for this chunk. The meaning of this value depends 163 // on the containing chunk. 164 uint16_t type; 165 166 // Size of the chunk header (in bytes). Adding this value to 167 // the address of the chunk allows you to find its associated data 168 // (if any). 169 uint16_t headerSize; 170 171 // Total size of this chunk (in bytes). This is the chunkSize plus 172 // the size of any data associated with the chunk. Adding this value 173 // to the chunk allows you to completely skip its contents (including 174 // any child chunks). If this value is the same as chunkSize, there is 175 // no data associated with the chunk. 176 uint32_t size; 177 }; 178 179 enum { 180 RES_NULL_TYPE = 0x0000, 181 RES_STRING_POOL_TYPE = 0x0001, 182 RES_TABLE_TYPE = 0x0002, 183 RES_XML_TYPE = 0x0003, 184 185 // Chunk types in RES_XML_TYPE 186 RES_XML_FIRST_CHUNK_TYPE = 0x0100, 187 RES_XML_START_NAMESPACE_TYPE= 0x0100, 188 RES_XML_END_NAMESPACE_TYPE = 0x0101, 189 RES_XML_START_ELEMENT_TYPE = 0x0102, 190 RES_XML_END_ELEMENT_TYPE = 0x0103, 191 RES_XML_CDATA_TYPE = 0x0104, 192 RES_XML_LAST_CHUNK_TYPE = 0x017f, 193 // This contains a uint32_t array mapping strings in the string 194 // pool back to resource identifiers. It is optional. 195 RES_XML_RESOURCE_MAP_TYPE = 0x0180, 196 197 // Chunk types in RES_TABLE_TYPE 198 RES_TABLE_PACKAGE_TYPE = 0x0200, 199 RES_TABLE_TYPE_TYPE = 0x0201, 200 RES_TABLE_TYPE_SPEC_TYPE = 0x0202 201 }; 202 203 /** 204 * Macros for building/splitting resource identifiers. 205 */ 206 #define Res_VALIDID(resid) (resid != 0) 207 #define Res_CHECKID(resid) ((resid&0xFFFF0000) != 0) 208 #define Res_MAKEID(package, type, entry) \ 209 (((package+1)<<24) | (((type+1)&0xFF)<<16) | (entry&0xFFFF)) 210 #define Res_GETPACKAGE(id) ((id>>24)-1) 211 #define Res_GETTYPE(id) (((id>>16)&0xFF)-1) 212 #define Res_GETENTRY(id) (id&0xFFFF) 213 214 #define Res_INTERNALID(resid) ((resid&0xFFFF0000) != 0 && (resid&0xFF0000) == 0) 215 #define Res_MAKEINTERNAL(entry) (0x01000000 | (entry&0xFFFF)) 216 #define Res_MAKEARRAY(entry) (0x02000000 | (entry&0xFFFF)) 217 218 #define Res_MAXPACKAGE 255 219 220 /** 221 * Representation of a value in a resource, supplying type 222 * information. 223 */ 224 struct Res_value 225 { 226 // Number of bytes in this structure. 227 uint16_t size; 228 229 // Always set to 0. 230 uint8_t res0; 231 232 // Type of the data value. 233 enum { 234 // Contains no data. 235 TYPE_NULL = 0x00, 236 // The 'data' holds a ResTable_ref, a reference to another resource 237 // table entry. 238 TYPE_REFERENCE = 0x01, 239 // The 'data' holds an attribute resource identifier. 240 TYPE_ATTRIBUTE = 0x02, 241 // The 'data' holds an index into the containing resource table's 242 // global value string pool. 243 TYPE_STRING = 0x03, 244 // The 'data' holds a single-precision floating point number. 245 TYPE_FLOAT = 0x04, 246 // The 'data' holds a complex number encoding a dimension value, 247 // such as "100in". 248 TYPE_DIMENSION = 0x05, 249 // The 'data' holds a complex number encoding a fraction of a 250 // container. 251 TYPE_FRACTION = 0x06, 252 253 // Beginning of integer flavors... 254 TYPE_FIRST_INT = 0x10, 255 256 // The 'data' is a raw integer value of the form n..n. 257 TYPE_INT_DEC = 0x10, 258 // The 'data' is a raw integer value of the form 0xn..n. 259 TYPE_INT_HEX = 0x11, 260 // The 'data' is either 0 or 1, for input "false" or "true" respectively. 261 TYPE_INT_BOOLEAN = 0x12, 262 263 // Beginning of color integer flavors... 264 TYPE_FIRST_COLOR_INT = 0x1c, 265 266 // The 'data' is a raw integer value of the form #aarrggbb. 267 TYPE_INT_COLOR_ARGB8 = 0x1c, 268 // The 'data' is a raw integer value of the form #rrggbb. 269 TYPE_INT_COLOR_RGB8 = 0x1d, 270 // The 'data' is a raw integer value of the form #argb. 271 TYPE_INT_COLOR_ARGB4 = 0x1e, 272 // The 'data' is a raw integer value of the form #rgb. 273 TYPE_INT_COLOR_RGB4 = 0x1f, 274 275 // ...end of integer flavors. 276 TYPE_LAST_COLOR_INT = 0x1f, 277 278 // ...end of integer flavors. 279 TYPE_LAST_INT = 0x1f 280 }; 281 uint8_t dataType; 282 283 // Structure of complex data values (TYPE_UNIT and TYPE_FRACTION) 284 enum { 285 // Where the unit type information is. This gives us 16 possible 286 // types, as defined below. 287 COMPLEX_UNIT_SHIFT = 0, 288 COMPLEX_UNIT_MASK = 0xf, 289 290 // TYPE_DIMENSION: Value is raw pixels. 291 COMPLEX_UNIT_PX = 0, 292 // TYPE_DIMENSION: Value is Device Independent Pixels. 293 COMPLEX_UNIT_DIP = 1, 294 // TYPE_DIMENSION: Value is a Scaled device independent Pixels. 295 COMPLEX_UNIT_SP = 2, 296 // TYPE_DIMENSION: Value is in points. 297 COMPLEX_UNIT_PT = 3, 298 // TYPE_DIMENSION: Value is in inches. 299 COMPLEX_UNIT_IN = 4, 300 // TYPE_DIMENSION: Value is in millimeters. 301 COMPLEX_UNIT_MM = 5, 302 303 // TYPE_FRACTION: A basic fraction of the overall size. 304 COMPLEX_UNIT_FRACTION = 0, 305 // TYPE_FRACTION: A fraction of the parent size. 306 COMPLEX_UNIT_FRACTION_PARENT = 1, 307 308 // Where the radix information is, telling where the decimal place 309 // appears in the mantissa. This give us 4 possible fixed point 310 // representations as defined below. 311 COMPLEX_RADIX_SHIFT = 4, 312 COMPLEX_RADIX_MASK = 0x3, 313 314 // The mantissa is an integral number -- i.e., 0xnnnnnn.0 315 COMPLEX_RADIX_23p0 = 0, 316 // The mantissa magnitude is 16 bits -- i.e, 0xnnnn.nn 317 COMPLEX_RADIX_16p7 = 1, 318 // The mantissa magnitude is 8 bits -- i.e, 0xnn.nnnn 319 COMPLEX_RADIX_8p15 = 2, 320 // The mantissa magnitude is 0 bits -- i.e, 0x0.nnnnnn 321 COMPLEX_RADIX_0p23 = 3, 322 323 // Where the actual value is. This gives us 23 bits of 324 // precision. The top bit is the sign. 325 COMPLEX_MANTISSA_SHIFT = 8, 326 COMPLEX_MANTISSA_MASK = 0xffffff 327 }; 328 329 // The data for this item, as interpreted according to dataType. 330 uint32_t data; 331 332 void copyFrom_dtoh(const Res_value& src); 333 }; 334 335 /** 336 * This is a reference to a unique entry (a ResTable_entry structure) 337 * in a resource table. The value is structured as: 0xpptteeee, 338 * where pp is the package index, tt is the type index in that 339 * package, and eeee is the entry index in that type. The package 340 * and type values start at 1 for the first item, to help catch cases 341 * where they have not been supplied. 342 */ 343 struct ResTable_ref 344 { 345 uint32_t ident; 346 }; 347 348 /** 349 * Reference to a string in a string pool. 350 */ 351 struct ResStringPool_ref 352 { 353 // Index into the string pool table (uint32_t-offset from the indices 354 // immediately after ResStringPool_header) at which to find the location 355 // of the string data in the pool. 356 uint32_t index; 357 }; 358 359 /** ******************************************************************** 360 * String Pool 361 * 362 * A set of strings that can be references by others through a 363 * ResStringPool_ref. 364 * 365 *********************************************************************** */ 366 367 /** 368 * Definition for a pool of strings. The data of this chunk is an 369 * array of uint32_t providing indices into the pool, relative to 370 * stringsStart. At stringsStart are all of the UTF-16 strings 371 * concatenated together; each starts with a uint16_t of the string's 372 * length and each ends with a 0x0000 terminator. If a string is > 373 * 32767 characters, the high bit of the length is set meaning to take 374 * those 15 bits as a high word and it will be followed by another 375 * uint16_t containing the low word. 376 * 377 * If styleCount is not zero, then immediately following the array of 378 * uint32_t indices into the string table is another array of indices 379 * into a style table starting at stylesStart. Each entry in the 380 * style table is an array of ResStringPool_span structures. 381 */ 382 struct ResStringPool_header 383 { 384 struct ResChunk_header header; 385 386 // Number of strings in this pool (number of uint32_t indices that follow 387 // in the data). 388 uint32_t stringCount; 389 390 // Number of style span arrays in the pool (number of uint32_t indices 391 // follow the string indices). 392 uint32_t styleCount; 393 394 // Flags. 395 enum { 396 // If set, the string index is sorted by the string values (based 397 // on strcmp16()). 398 SORTED_FLAG = 1<<0, 399 400 // String pool is encoded in UTF-8 401 UTF8_FLAG = 1<<8 402 }; 403 uint32_t flags; 404 405 // Index from header of the string data. 406 uint32_t stringsStart; 407 408 // Index from header of the style data. 409 uint32_t stylesStart; 410 }; 411 412 /** 413 * This structure defines a span of style information associated with 414 * a string in the pool. 415 */ 416 struct ResStringPool_span 417 { 418 enum { 419 END = 0xFFFFFFFF 420 }; 421 422 // This is the name of the span -- that is, the name of the XML 423 // tag that defined it. The special value END (0xFFFFFFFF) indicates 424 // the end of an array of spans. 425 ResStringPool_ref name; 426 427 // The range of characters in the string that this span applies to. 428 uint32_t firstChar, lastChar; 429 }; 430 431 /** 432 * Convenience class for accessing data in a ResStringPool resource. 433 */ 434 class ResStringPool 435 { 436 public: 437 ResStringPool(); 438 ResStringPool(const void* data, size_t size, bool copyData=false); 439 ~ResStringPool(); 440 441 status_t setTo(const void* data, size_t size, bool copyData=false); 442 443 status_t getError() const; 444 445 void uninit(); 446 447 // Return string entry as UTF16; if the pool is UTF8, the string will 448 // be converted before returning. 449 inline const char16_t* stringAt(const ResStringPool_ref& ref, size_t* outLen) const { 450 return stringAt(ref.index, outLen); 451 } 452 const char16_t* stringAt(size_t idx, size_t* outLen) const; 453 454 // Note: returns null if the string pool is not UTF8. 455 const char* string8At(size_t idx, size_t* outLen) const; 456 457 // Return string whether the pool is UTF8 or UTF16. Does not allow you 458 // to distinguish null. 459 const String8 string8ObjectAt(size_t idx) const; 460 461 const ResStringPool_span* styleAt(const ResStringPool_ref& ref) const; 462 const ResStringPool_span* styleAt(size_t idx) const; 463 464 ssize_t indexOfString(const char16_t* str, size_t strLen) const; 465 466 size_t size() const; 467 size_t styleCount() const; 468 size_t bytes() const; 469 470 bool isSorted() const; 471 bool isUTF8() const; 472 473 private: 474 status_t mError; 475 void* mOwnedData; 476 const ResStringPool_header* mHeader; 477 size_t mSize; 478 mutable Mutex mDecodeLock; 479 const uint32_t* mEntries; 480 const uint32_t* mEntryStyles; 481 const void* mStrings; 482 char16_t mutable** mCache; 483 uint32_t mStringPoolSize; // number of uint16_t 484 const uint32_t* mStyles; 485 uint32_t mStylePoolSize; // number of uint32_t 486 }; 487 488 /** ******************************************************************** 489 * XML Tree 490 * 491 * Binary representation of an XML document. This is designed to 492 * express everything in an XML document, in a form that is much 493 * easier to parse on the device. 494 * 495 *********************************************************************** */ 496 497 /** 498 * XML tree header. This appears at the front of an XML tree, 499 * describing its content. It is followed by a flat array of 500 * ResXMLTree_node structures; the hierarchy of the XML document 501 * is described by the occurrance of RES_XML_START_ELEMENT_TYPE 502 * and corresponding RES_XML_END_ELEMENT_TYPE nodes in the array. 503 */ 504 struct ResXMLTree_header 505 { 506 struct ResChunk_header header; 507 }; 508 509 /** 510 * Basic XML tree node. A single item in the XML document. Extended info 511 * about the node can be found after header.headerSize. 512 */ 513 struct ResXMLTree_node 514 { 515 struct ResChunk_header header; 516 517 // Line number in original source file at which this element appeared. 518 uint32_t lineNumber; 519 520 // Optional XML comment that was associated with this element; -1 if none. 521 struct ResStringPool_ref comment; 522 }; 523 524 /** 525 * Extended XML tree node for CDATA tags -- includes the CDATA string. 526 * Appears header.headerSize bytes after a ResXMLTree_node. 527 */ 528 struct ResXMLTree_cdataExt 529 { 530 // The raw CDATA character data. 531 struct ResStringPool_ref data; 532 533 // The typed value of the character data if this is a CDATA node. 534 struct Res_value typedData; 535 }; 536 537 /** 538 * Extended XML tree node for namespace start/end nodes. 539 * Appears header.headerSize bytes after a ResXMLTree_node. 540 */ 541 struct ResXMLTree_namespaceExt 542 { 543 // The prefix of the namespace. 544 struct ResStringPool_ref prefix; 545 546 // The URI of the namespace. 547 struct ResStringPool_ref uri; 548 }; 549 550 /** 551 * Extended XML tree node for element start/end nodes. 552 * Appears header.headerSize bytes after a ResXMLTree_node. 553 */ 554 struct ResXMLTree_endElementExt 555 { 556 // String of the full namespace of this element. 557 struct ResStringPool_ref ns; 558 559 // String name of this node if it is an ELEMENT; the raw 560 // character data if this is a CDATA node. 561 struct ResStringPool_ref name; 562 }; 563 564 /** 565 * Extended XML tree node for start tags -- includes attribute 566 * information. 567 * Appears header.headerSize bytes after a ResXMLTree_node. 568 */ 569 struct ResXMLTree_attrExt 570 { 571 // String of the full namespace of this element. 572 struct ResStringPool_ref ns; 573 574 // String name of this node if it is an ELEMENT; the raw 575 // character data if this is a CDATA node. 576 struct ResStringPool_ref name; 577 578 // Byte offset from the start of this structure where the attributes start. 579 uint16_t attributeStart; 580 581 // Size of the ResXMLTree_attribute structures that follow. 582 uint16_t attributeSize; 583 584 // Number of attributes associated with an ELEMENT. These are 585 // available as an array of ResXMLTree_attribute structures 586 // immediately following this node. 587 uint16_t attributeCount; 588 589 // Index (1-based) of the "id" attribute. 0 if none. 590 uint16_t idIndex; 591 592 // Index (1-based) of the "class" attribute. 0 if none. 593 uint16_t classIndex; 594 595 // Index (1-based) of the "style" attribute. 0 if none. 596 uint16_t styleIndex; 597 }; 598 599 struct ResXMLTree_attribute 600 { 601 // Namespace of this attribute. 602 struct ResStringPool_ref ns; 603 604 // Name of this attribute. 605 struct ResStringPool_ref name; 606 607 // The original raw string value of this attribute. 608 struct ResStringPool_ref rawValue; 609 610 // Processesd typed value of this attribute. 611 struct Res_value typedValue; 612 }; 613 614 class ResXMLTree; 615 616 class ResXMLParser 617 { 618 public: 619 ResXMLParser(const ResXMLTree& tree); 620 621 enum event_code_t { 622 BAD_DOCUMENT = -1, 623 START_DOCUMENT = 0, 624 END_DOCUMENT = 1, 625 626 FIRST_CHUNK_CODE = RES_XML_FIRST_CHUNK_TYPE, 627 628 START_NAMESPACE = RES_XML_START_NAMESPACE_TYPE, 629 END_NAMESPACE = RES_XML_END_NAMESPACE_TYPE, 630 START_TAG = RES_XML_START_ELEMENT_TYPE, 631 END_TAG = RES_XML_END_ELEMENT_TYPE, 632 TEXT = RES_XML_CDATA_TYPE 633 }; 634 635 struct ResXMLPosition 636 { 637 event_code_t eventCode; 638 const ResXMLTree_node* curNode; 639 const void* curExt; 640 }; 641 642 void restart(); 643 644 const ResStringPool& getStrings() const; 645 646 event_code_t getEventType() const; 647 // Note, unlike XmlPullParser, the first call to next() will return 648 // START_TAG of the first element. 649 event_code_t next(); 650 651 // These are available for all nodes: 652 int32_t getCommentID() const; 653 const uint16_t* getComment(size_t* outLen) const; 654 uint32_t getLineNumber() const; 655 656 // This is available for TEXT: 657 int32_t getTextID() const; 658 const uint16_t* getText(size_t* outLen) const; 659 ssize_t getTextValue(Res_value* outValue) const; 660 661 // These are available for START_NAMESPACE and END_NAMESPACE: 662 int32_t getNamespacePrefixID() const; 663 const uint16_t* getNamespacePrefix(size_t* outLen) const; 664 int32_t getNamespaceUriID() const; 665 const uint16_t* getNamespaceUri(size_t* outLen) const; 666 667 // These are available for START_TAG and END_TAG: 668 int32_t getElementNamespaceID() const; 669 const uint16_t* getElementNamespace(size_t* outLen) const; 670 int32_t getElementNameID() const; 671 const uint16_t* getElementName(size_t* outLen) const; 672 673 // Remaining methods are for retrieving information about attributes 674 // associated with a START_TAG: 675 676 size_t getAttributeCount() const; 677 678 // Returns -1 if no namespace, -2 if idx out of range. 679 int32_t getAttributeNamespaceID(size_t idx) const; 680 const uint16_t* getAttributeNamespace(size_t idx, size_t* outLen) const; 681 682 int32_t getAttributeNameID(size_t idx) const; 683 const uint16_t* getAttributeName(size_t idx, size_t* outLen) const; 684 uint32_t getAttributeNameResID(size_t idx) const; 685 686 // These will work only if the underlying string pool is UTF-8. 687 const char* getAttributeNamespace8(size_t idx, size_t* outLen) const; 688 const char* getAttributeName8(size_t idx, size_t* outLen) const; 689 690 int32_t getAttributeValueStringID(size_t idx) const; 691 const uint16_t* getAttributeStringValue(size_t idx, size_t* outLen) const; 692 693 int32_t getAttributeDataType(size_t idx) const; 694 int32_t getAttributeData(size_t idx) const; 695 ssize_t getAttributeValue(size_t idx, Res_value* outValue) const; 696 697 ssize_t indexOfAttribute(const char* ns, const char* attr) const; 698 ssize_t indexOfAttribute(const char16_t* ns, size_t nsLen, 699 const char16_t* attr, size_t attrLen) const; 700 701 ssize_t indexOfID() const; 702 ssize_t indexOfClass() const; 703 ssize_t indexOfStyle() const; 704 705 void getPosition(ResXMLPosition* pos) const; 706 void setPosition(const ResXMLPosition& pos); 707 708 private: 709 friend class ResXMLTree; 710 711 event_code_t nextNode(); 712 713 const ResXMLTree& mTree; 714 event_code_t mEventCode; 715 const ResXMLTree_node* mCurNode; 716 const void* mCurExt; 717 }; 718 719 /** 720 * Convenience class for accessing data in a ResXMLTree resource. 721 */ 722 class ResXMLTree : public ResXMLParser 723 { 724 public: 725 ResXMLTree(); 726 ResXMLTree(const void* data, size_t size, bool copyData=false); 727 ~ResXMLTree(); 728 729 status_t setTo(const void* data, size_t size, bool copyData=false); 730 731 status_t getError() const; 732 733 void uninit(); 734 735 private: 736 friend class ResXMLParser; 737 738 status_t validateNode(const ResXMLTree_node* node) const; 739 740 status_t mError; 741 void* mOwnedData; 742 const ResXMLTree_header* mHeader; 743 size_t mSize; 744 const uint8_t* mDataEnd; 745 ResStringPool mStrings; 746 const uint32_t* mResIds; 747 size_t mNumResIds; 748 const ResXMLTree_node* mRootNode; 749 const void* mRootExt; 750 event_code_t mRootCode; 751 }; 752 753 /** ******************************************************************** 754 * RESOURCE TABLE 755 * 756 *********************************************************************** */ 757 758 /** 759 * Header for a resource table. Its data contains a series of 760 * additional chunks: 761 * * A ResStringPool_header containing all table values. This string pool 762 * contains all of the string values in the entire resource table (not 763 * the names of entries or type identifiers however). 764 * * One or more ResTable_package chunks. 765 * 766 * Specific entries within a resource table can be uniquely identified 767 * with a single integer as defined by the ResTable_ref structure. 768 */ 769 struct ResTable_header 770 { 771 struct ResChunk_header header; 772 773 // The number of ResTable_package structures. 774 uint32_t packageCount; 775 }; 776 777 /** 778 * A collection of resource data types within a package. Followed by 779 * one or more ResTable_type and ResTable_typeSpec structures containing the 780 * entry values for each resource type. 781 */ 782 struct ResTable_package 783 { 784 struct ResChunk_header header; 785 786 // If this is a base package, its ID. Package IDs start 787 // at 1 (corresponding to the value of the package bits in a 788 // resource identifier). 0 means this is not a base package. 789 uint32_t id; 790 791 // Actual name of this package, \0-terminated. 792 char16_t name[128]; 793 794 // Offset to a ResStringPool_header defining the resource 795 // type symbol table. If zero, this package is inheriting from 796 // another base package (overriding specific values in it). 797 uint32_t typeStrings; 798 799 // Last index into typeStrings that is for public use by others. 800 uint32_t lastPublicType; 801 802 // Offset to a ResStringPool_header defining the resource 803 // key symbol table. If zero, this package is inheriting from 804 // another base package (overriding specific values in it). 805 uint32_t keyStrings; 806 807 // Last index into keyStrings that is for public use by others. 808 uint32_t lastPublicKey; 809 }; 810 811 /** 812 * Describes a particular resource configuration. 813 */ 814 struct ResTable_config 815 { 816 // Number of bytes in this structure. 817 uint32_t size; 818 819 union { 820 struct { 821 // Mobile country code (from SIM). 0 means "any". 822 uint16_t mcc; 823 // Mobile network code (from SIM). 0 means "any". 824 uint16_t mnc; 825 }; 826 uint32_t imsi; 827 }; 828 829 union { 830 struct { 831 // \0\0 means "any". Otherwise, en, fr, etc. 832 char language[2]; 833 834 // \0\0 means "any". Otherwise, US, CA, etc. 835 char country[2]; 836 }; 837 uint32_t locale; 838 }; 839 840 enum { 841 ORIENTATION_ANY = ACONFIGURATION_ORIENTATION_ANY, 842 ORIENTATION_PORT = ACONFIGURATION_ORIENTATION_PORT, 843 ORIENTATION_LAND = ACONFIGURATION_ORIENTATION_LAND, 844 ORIENTATION_SQUARE = ACONFIGURATION_ORIENTATION_SQUARE, 845 }; 846 847 enum { 848 TOUCHSCREEN_ANY = ACONFIGURATION_TOUCHSCREEN_ANY, 849 TOUCHSCREEN_NOTOUCH = ACONFIGURATION_TOUCHSCREEN_NOTOUCH, 850 TOUCHSCREEN_STYLUS = ACONFIGURATION_TOUCHSCREEN_STYLUS, 851 TOUCHSCREEN_FINGER = ACONFIGURATION_TOUCHSCREEN_FINGER, 852 }; 853 854 enum { 855 DENSITY_DEFAULT = ACONFIGURATION_DENSITY_DEFAULT, 856 DENSITY_LOW = ACONFIGURATION_DENSITY_LOW, 857 DENSITY_MEDIUM = ACONFIGURATION_DENSITY_MEDIUM, 858 DENSITY_TV = ACONFIGURATION_DENSITY_TV, 859 DENSITY_HIGH = ACONFIGURATION_DENSITY_HIGH, 860 DENSITY_XHIGH = ACONFIGURATION_DENSITY_XHIGH, 861 DENSITY_XXHIGH = ACONFIGURATION_DENSITY_XXHIGH, 862 DENSITY_XXXHIGH = ACONFIGURATION_DENSITY_XXXHIGH, 863 DENSITY_NONE = ACONFIGURATION_DENSITY_NONE 864 }; 865 866 union { 867 struct { 868 uint8_t orientation; 869 uint8_t touchscreen; 870 uint16_t density; 871 }; 872 uint32_t screenType; 873 }; 874 875 enum { 876 KEYBOARD_ANY = ACONFIGURATION_KEYBOARD_ANY, 877 KEYBOARD_NOKEYS = ACONFIGURATION_KEYBOARD_NOKEYS, 878 KEYBOARD_QWERTY = ACONFIGURATION_KEYBOARD_QWERTY, 879 KEYBOARD_12KEY = ACONFIGURATION_KEYBOARD_12KEY, 880 }; 881 882 enum { 883 NAVIGATION_ANY = ACONFIGURATION_NAVIGATION_ANY, 884 NAVIGATION_NONAV = ACONFIGURATION_NAVIGATION_NONAV, 885 NAVIGATION_DPAD = ACONFIGURATION_NAVIGATION_DPAD, 886 NAVIGATION_TRACKBALL = ACONFIGURATION_NAVIGATION_TRACKBALL, 887 NAVIGATION_WHEEL = ACONFIGURATION_NAVIGATION_WHEEL, 888 }; 889 890 enum { 891 MASK_KEYSHIDDEN = 0x0003, 892 KEYSHIDDEN_ANY = ACONFIGURATION_KEYSHIDDEN_ANY, 893 KEYSHIDDEN_NO = ACONFIGURATION_KEYSHIDDEN_NO, 894 KEYSHIDDEN_YES = ACONFIGURATION_KEYSHIDDEN_YES, 895 KEYSHIDDEN_SOFT = ACONFIGURATION_KEYSHIDDEN_SOFT, 896 }; 897 898 enum { 899 MASK_NAVHIDDEN = 0x000c, 900 SHIFT_NAVHIDDEN = 2, 901 NAVHIDDEN_ANY = ACONFIGURATION_NAVHIDDEN_ANY << SHIFT_NAVHIDDEN, 902 NAVHIDDEN_NO = ACONFIGURATION_NAVHIDDEN_NO << SHIFT_NAVHIDDEN, 903 NAVHIDDEN_YES = ACONFIGURATION_NAVHIDDEN_YES << SHIFT_NAVHIDDEN, 904 }; 905 906 union { 907 struct { 908 uint8_t keyboard; 909 uint8_t navigation; 910 uint8_t inputFlags; 911 uint8_t inputPad0; 912 }; 913 uint32_t input; 914 }; 915 916 enum { 917 SCREENWIDTH_ANY = 0 918 }; 919 920 enum { 921 SCREENHEIGHT_ANY = 0 922 }; 923 924 union { 925 struct { 926 uint16_t screenWidth; 927 uint16_t screenHeight; 928 }; 929 uint32_t screenSize; 930 }; 931 932 enum { 933 SDKVERSION_ANY = 0 934 }; 935 936 enum { 937 MINORVERSION_ANY = 0 938 }; 939 940 union { 941 struct { 942 uint16_t sdkVersion; 943 // For now minorVersion must always be 0!!! Its meaning 944 // is currently undefined. 945 uint16_t minorVersion; 946 }; 947 uint32_t version; 948 }; 949 950 enum { 951 // screenLayout bits for screen size class. 952 MASK_SCREENSIZE = 0x0f, 953 SCREENSIZE_ANY = ACONFIGURATION_SCREENSIZE_ANY, 954 SCREENSIZE_SMALL = ACONFIGURATION_SCREENSIZE_SMALL, 955 SCREENSIZE_NORMAL = ACONFIGURATION_SCREENSIZE_NORMAL, 956 SCREENSIZE_LARGE = ACONFIGURATION_SCREENSIZE_LARGE, 957 SCREENSIZE_XLARGE = ACONFIGURATION_SCREENSIZE_XLARGE, 958 959 // screenLayout bits for wide/long screen variation. 960 MASK_SCREENLONG = 0x30, 961 SHIFT_SCREENLONG = 4, 962 SCREENLONG_ANY = ACONFIGURATION_SCREENLONG_ANY << SHIFT_SCREENLONG, 963 SCREENLONG_NO = ACONFIGURATION_SCREENLONG_NO << SHIFT_SCREENLONG, 964 SCREENLONG_YES = ACONFIGURATION_SCREENLONG_YES << SHIFT_SCREENLONG, 965 966 // screenLayout bits for layout direction. 967 MASK_LAYOUTDIR = 0xC0, 968 SHIFT_LAYOUTDIR = 6, 969 LAYOUTDIR_ANY = ACONFIGURATION_LAYOUTDIR_ANY << SHIFT_LAYOUTDIR, 970 LAYOUTDIR_LTR = ACONFIGURATION_LAYOUTDIR_LTR << SHIFT_LAYOUTDIR, 971 LAYOUTDIR_RTL = ACONFIGURATION_LAYOUTDIR_RTL << SHIFT_LAYOUTDIR, 972 }; 973 974 enum { 975 // uiMode bits for the mode type. 976 MASK_UI_MODE_TYPE = 0x0f, 977 UI_MODE_TYPE_ANY = ACONFIGURATION_UI_MODE_TYPE_ANY, 978 UI_MODE_TYPE_NORMAL = ACONFIGURATION_UI_MODE_TYPE_NORMAL, 979 UI_MODE_TYPE_DESK = ACONFIGURATION_UI_MODE_TYPE_DESK, 980 UI_MODE_TYPE_CAR = ACONFIGURATION_UI_MODE_TYPE_CAR, 981 UI_MODE_TYPE_TELEVISION = ACONFIGURATION_UI_MODE_TYPE_TELEVISION, 982 UI_MODE_TYPE_APPLIANCE = ACONFIGURATION_UI_MODE_TYPE_APPLIANCE, 983 984 // uiMode bits for the night switch. 985 MASK_UI_MODE_NIGHT = 0x30, 986 SHIFT_UI_MODE_NIGHT = 4, 987 UI_MODE_NIGHT_ANY = ACONFIGURATION_UI_MODE_NIGHT_ANY << SHIFT_UI_MODE_NIGHT, 988 UI_MODE_NIGHT_NO = ACONFIGURATION_UI_MODE_NIGHT_NO << SHIFT_UI_MODE_NIGHT, 989 UI_MODE_NIGHT_YES = ACONFIGURATION_UI_MODE_NIGHT_YES << SHIFT_UI_MODE_NIGHT, 990 }; 991 992 union { 993 struct { 994 uint8_t screenLayout; 995 uint8_t uiMode; 996 uint16_t smallestScreenWidthDp; 997 }; 998 uint32_t screenConfig; 999 }; 1000 1001 union { 1002 struct { 1003 uint16_t screenWidthDp; 1004 uint16_t screenHeightDp; 1005 }; 1006 uint32_t screenSizeDp; 1007 }; 1008 1009 void copyFromDeviceNoSwap(const ResTable_config& o); 1010 1011 void copyFromDtoH(const ResTable_config& o); 1012 1013 void swapHtoD(); 1014 1015 int compare(const ResTable_config& o) const; 1016 int compareLogical(const ResTable_config& o) const; 1017 1018 // Flags indicating a set of config values. These flag constants must 1019 // match the corresponding ones in android.content.pm.ActivityInfo and 1020 // attrs_manifest.xml. 1021 enum { 1022 CONFIG_MCC = ACONFIGURATION_MCC, 1023 CONFIG_MNC = ACONFIGURATION_MCC, 1024 CONFIG_LOCALE = ACONFIGURATION_LOCALE, 1025 CONFIG_TOUCHSCREEN = ACONFIGURATION_TOUCHSCREEN, 1026 CONFIG_KEYBOARD = ACONFIGURATION_KEYBOARD, 1027 CONFIG_KEYBOARD_HIDDEN = ACONFIGURATION_KEYBOARD_HIDDEN, 1028 CONFIG_NAVIGATION = ACONFIGURATION_NAVIGATION, 1029 CONFIG_ORIENTATION = ACONFIGURATION_ORIENTATION, 1030 CONFIG_DENSITY = ACONFIGURATION_DENSITY, 1031 CONFIG_SCREEN_SIZE = ACONFIGURATION_SCREEN_SIZE, 1032 CONFIG_SMALLEST_SCREEN_SIZE = ACONFIGURATION_SMALLEST_SCREEN_SIZE, 1033 CONFIG_VERSION = ACONFIGURATION_VERSION, 1034 CONFIG_SCREEN_LAYOUT = ACONFIGURATION_SCREEN_LAYOUT, 1035 CONFIG_UI_MODE = ACONFIGURATION_UI_MODE, 1036 CONFIG_LAYOUTDIR = ACONFIGURATION_LAYOUTDIR, 1037 }; 1038 1039 // Compare two configuration, returning CONFIG_* flags set for each value 1040 // that is different. 1041 int diff(const ResTable_config& o) const; 1042 1043 // Return true if 'this' is more specific than 'o'. 1044 bool isMoreSpecificThan(const ResTable_config& o) const; 1045 1046 // Return true if 'this' is a better match than 'o' for the 'requested' 1047 // configuration. This assumes that match() has already been used to 1048 // remove any configurations that don't match the requested configuration 1049 // at all; if they are not first filtered, non-matching results can be 1050 // considered better than matching ones. 1051 // The general rule per attribute: if the request cares about an attribute 1052 // (it normally does), if the two (this and o) are equal it's a tie. If 1053 // they are not equal then one must be generic because only generic and 1054 // '==requested' will pass the match() call. So if this is not generic, 1055 // it wins. If this IS generic, o wins (return false). 1056 bool isBetterThan(const ResTable_config& o, const ResTable_config* requested) const; 1057 1058 // Return true if 'this' can be considered a match for the parameters in 1059 // 'settings'. 1060 // Note this is asymetric. A default piece of data will match every request 1061 // but a request for the default should not match odd specifics 1062 // (ie, request with no mcc should not match a particular mcc's data) 1063 // settings is the requested settings 1064 bool match(const ResTable_config& settings) const; 1065 1066 void getLocale(char str[6]) const; 1067 1068 String8 toString() const; 1069 }; 1070 1071 /** 1072 * A specification of the resources defined by a particular type. 1073 * 1074 * There should be one of these chunks for each resource type. 1075 * 1076 * This structure is followed by an array of integers providing the set of 1077 * configuration change flags (ResTable_config::CONFIG_*) that have multiple 1078 * resources for that configuration. In addition, the high bit is set if that 1079 * resource has been made public. 1080 */ 1081 struct ResTable_typeSpec 1082 { 1083 struct ResChunk_header header; 1084 1085 // The type identifier this chunk is holding. Type IDs start 1086 // at 1 (corresponding to the value of the type bits in a 1087 // resource identifier). 0 is invalid. 1088 uint8_t id; 1089 1090 // Must be 0. 1091 uint8_t res0; 1092 // Must be 0. 1093 uint16_t res1; 1094 1095 // Number of uint32_t entry configuration masks that follow. 1096 uint32_t entryCount; 1097 1098 enum { 1099 // Additional flag indicating an entry is public. 1100 SPEC_PUBLIC = 0x40000000 1101 }; 1102 }; 1103 1104 /** 1105 * A collection of resource entries for a particular resource data 1106 * type. Followed by an array of uint32_t defining the resource 1107 * values, corresponding to the array of type strings in the 1108 * ResTable_package::typeStrings string block. Each of these hold an 1109 * index from entriesStart; a value of NO_ENTRY means that entry is 1110 * not defined. 1111 * 1112 * There may be multiple of these chunks for a particular resource type, 1113 * supply different configuration variations for the resource values of 1114 * that type. 1115 * 1116 * It would be nice to have an additional ordered index of entries, so 1117 * we can do a binary search if trying to find a resource by string name. 1118 */ 1119 struct ResTable_type 1120 { 1121 struct ResChunk_header header; 1122 1123 enum { 1124 NO_ENTRY = 0xFFFFFFFF 1125 }; 1126 1127 // The type identifier this chunk is holding. Type IDs start 1128 // at 1 (corresponding to the value of the type bits in a 1129 // resource identifier). 0 is invalid. 1130 uint8_t id; 1131 1132 // Must be 0. 1133 uint8_t res0; 1134 // Must be 0. 1135 uint16_t res1; 1136 1137 // Number of uint32_t entry indices that follow. 1138 uint32_t entryCount; 1139 1140 // Offset from header where ResTable_entry data starts. 1141 uint32_t entriesStart; 1142 1143 // Configuration this collection of entries is designed for. 1144 ResTable_config config; 1145 }; 1146 1147 /** 1148 * This is the beginning of information about an entry in the resource 1149 * table. It holds the reference to the name of this entry, and is 1150 * immediately followed by one of: 1151 * * A Res_value structure, if FLAG_COMPLEX is -not- set. 1152 * * An array of ResTable_map structures, if FLAG_COMPLEX is set. 1153 * These supply a set of name/value mappings of data. 1154 */ 1155 struct ResTable_entry 1156 { 1157 // Number of bytes in this structure. 1158 uint16_t size; 1159 1160 enum { 1161 // If set, this is a complex entry, holding a set of name/value 1162 // mappings. It is followed by an array of ResTable_map structures. 1163 FLAG_COMPLEX = 0x0001, 1164 // If set, this resource has been declared public, so libraries 1165 // are allowed to reference it. 1166 FLAG_PUBLIC = 0x0002 1167 }; 1168 uint16_t flags; 1169 1170 // Reference into ResTable_package::keyStrings identifying this entry. 1171 struct ResStringPool_ref key; 1172 }; 1173 1174 /** 1175 * Extended form of a ResTable_entry for map entries, defining a parent map 1176 * resource from which to inherit values. 1177 */ 1178 struct ResTable_map_entry : public ResTable_entry 1179 { 1180 // Resource identifier of the parent mapping, or 0 if there is none. 1181 ResTable_ref parent; 1182 // Number of name/value pairs that follow for FLAG_COMPLEX. 1183 uint32_t count; 1184 }; 1185 1186 /** 1187 * A single name/value mapping that is part of a complex resource 1188 * entry. 1189 */ 1190 struct ResTable_map 1191 { 1192 // The resource identifier defining this mapping's name. For attribute 1193 // resources, 'name' can be one of the following special resource types 1194 // to supply meta-data about the attribute; for all other resource types 1195 // it must be an attribute resource. 1196 ResTable_ref name; 1197 1198 // Special values for 'name' when defining attribute resources. 1199 enum { 1200 // This entry holds the attribute's type code. 1201 ATTR_TYPE = Res_MAKEINTERNAL(0), 1202 1203 // For integral attributes, this is the minimum value it can hold. 1204 ATTR_MIN = Res_MAKEINTERNAL(1), 1205 1206 // For integral attributes, this is the maximum value it can hold. 1207 ATTR_MAX = Res_MAKEINTERNAL(2), 1208 1209 // Localization of this resource is can be encouraged or required with 1210 // an aapt flag if this is set 1211 ATTR_L10N = Res_MAKEINTERNAL(3), 1212 1213 // for plural support, see android.content.res.PluralRules#attrForQuantity(int) 1214 ATTR_OTHER = Res_MAKEINTERNAL(4), 1215 ATTR_ZERO = Res_MAKEINTERNAL(5), 1216 ATTR_ONE = Res_MAKEINTERNAL(6), 1217 ATTR_TWO = Res_MAKEINTERNAL(7), 1218 ATTR_FEW = Res_MAKEINTERNAL(8), 1219 ATTR_MANY = Res_MAKEINTERNAL(9) 1220 1221 }; 1222 1223 // Bit mask of allowed types, for use with ATTR_TYPE. 1224 enum { 1225 // No type has been defined for this attribute, use generic 1226 // type handling. The low 16 bits are for types that can be 1227 // handled generically; the upper 16 require additional information 1228 // in the bag so can not be handled generically for TYPE_ANY. 1229 TYPE_ANY = 0x0000FFFF, 1230 1231 // Attribute holds a references to another resource. 1232 TYPE_REFERENCE = 1<<0, 1233 1234 // Attribute holds a generic string. 1235 TYPE_STRING = 1<<1, 1236 1237 // Attribute holds an integer value. ATTR_MIN and ATTR_MIN can 1238 // optionally specify a constrained range of possible integer values. 1239 TYPE_INTEGER = 1<<2, 1240 1241 // Attribute holds a boolean integer. 1242 TYPE_BOOLEAN = 1<<3, 1243 1244 // Attribute holds a color value. 1245 TYPE_COLOR = 1<<4, 1246 1247 // Attribute holds a floating point value. 1248 TYPE_FLOAT = 1<<5, 1249 1250 // Attribute holds a dimension value, such as "20px". 1251 TYPE_DIMENSION = 1<<6, 1252 1253 // Attribute holds a fraction value, such as "20%". 1254 TYPE_FRACTION = 1<<7, 1255 1256 // Attribute holds an enumeration. The enumeration values are 1257 // supplied as additional entries in the map. 1258 TYPE_ENUM = 1<<16, 1259 1260 // Attribute holds a bitmaks of flags. The flag bit values are 1261 // supplied as additional entries in the map. 1262 TYPE_FLAGS = 1<<17 1263 }; 1264 1265 // Enum of localization modes, for use with ATTR_L10N. 1266 enum { 1267 L10N_NOT_REQUIRED = 0, 1268 L10N_SUGGESTED = 1 1269 }; 1270 1271 // This mapping's value. 1272 Res_value value; 1273 }; 1274 1275 /** 1276 * Convenience class for accessing data in a ResTable resource. 1277 */ 1278 class ResTable 1279 { 1280 public: 1281 ResTable(); 1282 ResTable(const void* data, size_t size, void* cookie, 1283 bool copyData=false); 1284 ~ResTable(); 1285 1286 status_t add(const void* data, size_t size, void* cookie, 1287 bool copyData=false, const void* idmap = NULL); 1288 status_t add(Asset* asset, void* cookie, 1289 bool copyData=false, const void* idmap = NULL); 1290 status_t add(ResTable* src); 1291 1292 status_t getError() const; 1293 1294 void uninit(); 1295 1296 struct resource_name 1297 { 1298 const char16_t* package; 1299 size_t packageLen; 1300 const char16_t* type; 1301 const char* type8; 1302 size_t typeLen; 1303 const char16_t* name; 1304 const char* name8; 1305 size_t nameLen; 1306 }; 1307 1308 bool getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const; 1309 1310 /** 1311 * Retrieve the value of a resource. If the resource is found, returns a 1312 * value >= 0 indicating the table it is in (for use with 1313 * getTableStringBlock() and getTableCookie()) and fills in 'outValue'. If 1314 * not found, returns a negative error code. 1315 * 1316 * Note that this function does not do reference traversal. If you want 1317 * to follow references to other resources to get the "real" value to 1318 * use, you need to call resolveReference() after this function. 1319 * 1320 * @param resID The desired resoruce identifier. 1321 * @param outValue Filled in with the resource data that was found. 1322 * 1323 * @return ssize_t Either a >= 0 table index or a negative error code. 1324 */ 1325 ssize_t getResource(uint32_t resID, Res_value* outValue, bool mayBeBag = false, 1326 uint16_t density = 0, 1327 uint32_t* outSpecFlags = NULL, 1328 ResTable_config* outConfig = NULL) const; 1329 1330 inline ssize_t getResource(const ResTable_ref& res, Res_value* outValue, 1331 uint32_t* outSpecFlags=NULL) const { 1332 return getResource(res.ident, outValue, false, 0, outSpecFlags, NULL); 1333 } 1334 1335 ssize_t resolveReference(Res_value* inOutValue, 1336 ssize_t blockIndex, 1337 uint32_t* outLastRef = NULL, 1338 uint32_t* inoutTypeSpecFlags = NULL, 1339 ResTable_config* outConfig = NULL) const; 1340 1341 enum { 1342 TMP_BUFFER_SIZE = 16 1343 }; 1344 const char16_t* valueToString(const Res_value* value, size_t stringBlock, 1345 char16_t tmpBuffer[TMP_BUFFER_SIZE], 1346 size_t* outLen); 1347 1348 struct bag_entry { 1349 ssize_t stringBlock; 1350 ResTable_map map; 1351 }; 1352 1353 /** 1354 * Retrieve the bag of a resource. If the resoruce is found, returns the 1355 * number of bags it contains and 'outBag' points to an array of their 1356 * values. If not found, a negative error code is returned. 1357 * 1358 * Note that this function -does- do reference traversal of the bag data. 1359 * 1360 * @param resID The desired resource identifier. 1361 * @param outBag Filled inm with a pointer to the bag mappings. 1362 * 1363 * @return ssize_t Either a >= 0 bag count of negative error code. 1364 */ 1365 ssize_t lockBag(uint32_t resID, const bag_entry** outBag) const; 1366 1367 void unlockBag(const bag_entry* bag) const; 1368 1369 void lock() const; 1370 1371 ssize_t getBagLocked(uint32_t resID, const bag_entry** outBag, 1372 uint32_t* outTypeSpecFlags=NULL) const; 1373 1374 void unlock() const; 1375 1376 class Theme { 1377 public: 1378 Theme(const ResTable& table); 1379 ~Theme(); 1380 1381 inline const ResTable& getResTable() const { return mTable; } 1382 1383 status_t applyStyle(uint32_t resID, bool force=false); 1384 status_t setTo(const Theme& other); 1385 1386 /** 1387 * Retrieve a value in the theme. If the theme defines this 1388 * value, returns a value >= 0 indicating the table it is in 1389 * (for use with getTableStringBlock() and getTableCookie) and 1390 * fills in 'outValue'. If not found, returns a negative error 1391 * code. 1392 * 1393 * Note that this function does not do reference traversal. If you want 1394 * to follow references to other resources to get the "real" value to 1395 * use, you need to call resolveReference() after this function. 1396 * 1397 * @param resID A resource identifier naming the desired theme 1398 * attribute. 1399 * @param outValue Filled in with the theme value that was 1400 * found. 1401 * 1402 * @return ssize_t Either a >= 0 table index or a negative error code. 1403 */ 1404 ssize_t getAttribute(uint32_t resID, Res_value* outValue, 1405 uint32_t* outTypeSpecFlags = NULL) const; 1406 1407 /** 1408 * This is like ResTable::resolveReference(), but also takes 1409 * care of resolving attribute references to the theme. 1410 */ 1411 ssize_t resolveAttributeReference(Res_value* inOutValue, 1412 ssize_t blockIndex, uint32_t* outLastRef = NULL, 1413 uint32_t* inoutTypeSpecFlags = NULL, 1414 ResTable_config* inoutConfig = NULL) const; 1415 1416 void dumpToLog() const; 1417 1418 private: 1419 Theme(const Theme&); 1420 Theme& operator=(const Theme&); 1421 1422 struct theme_entry { 1423 ssize_t stringBlock; 1424 uint32_t typeSpecFlags; 1425 Res_value value; 1426 }; 1427 struct type_info { 1428 size_t numEntries; 1429 theme_entry* entries; 1430 }; 1431 struct package_info { 1432 size_t numTypes; 1433 type_info types[]; 1434 }; 1435 1436 void free_package(package_info* pi); 1437 package_info* copy_package(package_info* pi); 1438 1439 const ResTable& mTable; 1440 package_info* mPackages[Res_MAXPACKAGE]; 1441 }; 1442 1443 void setParameters(const ResTable_config* params); 1444 void getParameters(ResTable_config* params) const; 1445 1446 // Retrieve an identifier (which can be passed to getResource) 1447 // for a given resource name. The 'name' can be fully qualified 1448 // (<package>:<type>.<basename>) or the package or type components 1449 // can be dropped if default values are supplied here. 1450 // 1451 // Returns 0 if no such resource was found, else a valid resource ID. 1452 uint32_t identifierForName(const char16_t* name, size_t nameLen, 1453 const char16_t* type = 0, size_t typeLen = 0, 1454 const char16_t* defPackage = 0, 1455 size_t defPackageLen = 0, 1456 uint32_t* outTypeSpecFlags = NULL) const; 1457 1458 static bool expandResourceRef(const uint16_t* refStr, size_t refLen, 1459 String16* outPackage, 1460 String16* outType, 1461 String16* outName, 1462 const String16* defType = NULL, 1463 const String16* defPackage = NULL, 1464 const char** outErrorMsg = NULL, 1465 bool* outPublicOnly = NULL); 1466 1467 static bool stringToInt(const char16_t* s, size_t len, Res_value* outValue); 1468 static bool stringToFloat(const char16_t* s, size_t len, Res_value* outValue); 1469 1470 // Used with stringToValue. 1471 class Accessor 1472 { 1473 public: 1474 inline virtual ~Accessor() { } 1475 1476 virtual uint32_t getCustomResource(const String16& package, 1477 const String16& type, 1478 const String16& name) const = 0; 1479 virtual uint32_t getCustomResourceWithCreation(const String16& package, 1480 const String16& type, 1481 const String16& name, 1482 const bool createIfNeeded = false) = 0; 1483 virtual uint32_t getRemappedPackage(uint32_t origPackage) const = 0; 1484 virtual bool getAttributeType(uint32_t attrID, uint32_t* outType) = 0; 1485 virtual bool getAttributeMin(uint32_t attrID, uint32_t* outMin) = 0; 1486 virtual bool getAttributeMax(uint32_t attrID, uint32_t* outMax) = 0; 1487 virtual bool getAttributeEnum(uint32_t attrID, 1488 const char16_t* name, size_t nameLen, 1489 Res_value* outValue) = 0; 1490 virtual bool getAttributeFlags(uint32_t attrID, 1491 const char16_t* name, size_t nameLen, 1492 Res_value* outValue) = 0; 1493 virtual uint32_t getAttributeL10N(uint32_t attrID) = 0; 1494 virtual bool getLocalizationSetting() = 0; 1495 virtual void reportError(void* accessorCookie, const char* fmt, ...) = 0; 1496 }; 1497 1498 // Convert a string to a resource value. Handles standard "@res", 1499 // "#color", "123", and "0x1bd" types; performs escaping of strings. 1500 // The resulting value is placed in 'outValue'; if it is a string type, 1501 // 'outString' receives the string. If 'attrID' is supplied, the value is 1502 // type checked against this attribute and it is used to perform enum 1503 // evaluation. If 'acccessor' is supplied, it will be used to attempt to 1504 // resolve resources that do not exist in this ResTable. If 'attrType' is 1505 // supplied, the value will be type checked for this format if 'attrID' 1506 // is not supplied or found. 1507 bool stringToValue(Res_value* outValue, String16* outString, 1508 const char16_t* s, size_t len, 1509 bool preserveSpaces, bool coerceType, 1510 uint32_t attrID = 0, 1511 const String16* defType = NULL, 1512 const String16* defPackage = NULL, 1513 Accessor* accessor = NULL, 1514 void* accessorCookie = NULL, 1515 uint32_t attrType = ResTable_map::TYPE_ANY, 1516 bool enforcePrivate = true) const; 1517 1518 // Perform processing of escapes and quotes in a string. 1519 static bool collectString(String16* outString, 1520 const char16_t* s, size_t len, 1521 bool preserveSpaces, 1522 const char** outErrorMsg = NULL, 1523 bool append = false); 1524 1525 size_t getBasePackageCount() const; 1526 const char16_t* getBasePackageName(size_t idx) const; 1527 uint32_t getBasePackageId(size_t idx) const; 1528 1529 // Return the number of resource tables that the object contains. 1530 size_t getTableCount() const; 1531 // Return the values string pool for the resource table at the given 1532 // index. This string pool contains all of the strings for values 1533 // contained in the resource table -- that is the item values themselves, 1534 // but not the names their entries or types. 1535 const ResStringPool* getTableStringBlock(size_t index) const; 1536 // Return unique cookie identifier for the given resource table. 1537 void* getTableCookie(size_t index) const; 1538 1539 // Return the configurations (ResTable_config) that we know about 1540 void getConfigurations(Vector<ResTable_config>* configs) const; 1541 1542 void getLocales(Vector<String8>* locales) const; 1543 1544 // Generate an idmap. 1545 // 1546 // Return value: on success: NO_ERROR; caller is responsible for free-ing 1547 // outData (using free(3)). On failure, any status_t value other than 1548 // NO_ERROR; the caller should not free outData. 1549 status_t createIdmap(const ResTable& overlay, uint32_t originalCrc, uint32_t overlayCrc, 1550 void** outData, size_t* outSize) const; 1551 1552 enum { 1553 IDMAP_HEADER_SIZE_BYTES = 3 * sizeof(uint32_t), 1554 }; 1555 // Retrieve idmap meta-data. 1556 // 1557 // This function only requires the idmap header (the first 1558 // IDMAP_HEADER_SIZE_BYTES) bytes of an idmap file. 1559 static bool getIdmapInfo(const void* idmap, size_t size, 1560 uint32_t* pOriginalCrc, uint32_t* pOverlayCrc); 1561 1562 void print(bool inclValues) const; 1563 static String8 normalizeForOutput(const char* input); 1564 1565 private: 1566 struct Header; 1567 struct Type; 1568 struct Package; 1569 struct PackageGroup; 1570 struct bag_set; 1571 1572 status_t add(const void* data, size_t size, void* cookie, 1573 Asset* asset, bool copyData, const Asset* idmap); 1574 1575 ssize_t getResourcePackageIndex(uint32_t resID) const; 1576 ssize_t getEntry( 1577 const Package* package, int typeIndex, int entryIndex, 1578 const ResTable_config* config, 1579 const ResTable_type** outType, const ResTable_entry** outEntry, 1580 const Type** outTypeClass) const; 1581 status_t parsePackage( 1582 const ResTable_package* const pkg, const Header* const header, uint32_t idmap_id); 1583 1584 void print_value(const Package* pkg, const Res_value& value) const; 1585 1586 mutable Mutex mLock; 1587 1588 status_t mError; 1589 1590 ResTable_config mParams; 1591 1592 // Array of all resource tables. 1593 Vector<Header*> mHeaders; 1594 1595 // Array of packages in all resource tables. 1596 Vector<PackageGroup*> mPackageGroups; 1597 1598 // Mapping from resource package IDs to indices into the internal 1599 // package array. 1600 uint8_t mPackageMap[256]; 1601 }; 1602 1603 } // namespace android 1604 1605 #endif // _LIBS_UTILS_RESOURCE_TYPES_H 1606
